Battery slurry filter assembly

Abstract

The utility model discloses a battery slurry filter assembly. The battery slurry filter assembly comprises a moving mechanism, a filtering mechanism, an iron removal mechanism and a pumping mechanism, the filtering mechanism is arranged on the moving mechanism, and the end part of the filtering mechanism is communicated with a feeding hole; one end of the iron removal mechanism is communicated with the filtering mechanism, and the other end is communicated with a discharge port; and the pumping mechanism is communicated with the filtering mechanism. According to the battery slurry filter assembly provided by the utility model, the pumping mechanism, the filtering mechanism and the iron removal mechanism are arranged on the moving mechanism, so that battery slurry can be conveyed to the filtering mechanism through the pumping mechanism for filtering large-particle impurities, and magnetic substances are removed through the iron removal mechanism after filtering; and optimization treatment of the battery slurry is effectively carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a battery slurry filter assembly. Background Art

[0002] The subdivision of the positive and negative electrode materials of the battery can cause many problems due to metal impurities, which have a great impact on the battery discharge and safety. Metal foreign objects basically exist in trace amounts in the product, but no matter how much, they will cause different degrees of damage to the battery. In addition to elemental iron, metal foreign objects also include Cn, Zn, Ni, etc. in the form of simple substances. Some of these impurities are magnetic. Therefore, a battery slurry filter assembly is provided as a slurry iron removal and filtration treatment device, which is applied to the optimization treatment of the slurry after the preparation of the positive and negative electrode slurries of the lithium-ion battery and before coating. Summary of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a battery slurry filter assembly, and the specific scheme is as follows:

[0004] A battery slurry filter assembly includes:

[0005] A moving mechanism;

[0006] A filtering mechanism, which is arranged on the moving mechanism, and its end is communicated with a feed port;

[0007] An iron removal mechanism, one end of which is communicated with the filtering mechanism, and the other end is communicated with a discharge port;

[0008] A pumping mechanism, which is communicated with the filtering mechanism.

[0009] Preferably, the iron removal mechanism includes a plurality of iron removers, and the ends of any two adjacent iron removers are communicated to form a "U" shape.

[0010] Preferably, the iron remover includes:

[0011] A housing, one end of which is communicated with the filtering mechanism, and the other end is communicated with the discharge port;

[0012] A magnetic rod, which is arranged in the housing and extends along the length direction of the housing.

[0013] Preferably, the filtering mechanism includes:

[0014] A filter housing, which is communicated with the iron removal mechanism or the discharge port;

[0015] A filter element, which is arranged in the filter housing and is communicated with the feed port.

[0016] Preferably, a shunt switch is further included. The shunt switch includes a first three-way valve disposed between the filtering mechanism and the iron removing mechanism, and the first three-way valve is connected to the discharge port through a first direct connection pipeline.

[0017] Preferably, the shunt switch further includes a second three-way valve disposed between the feed port and the filtering mechanism, and the second three-way valve is connected to the iron removing mechanism through a second direct connection pipeline.

[0018] Preferably, the magnetic field intensity of the magnetic rod is greater than or equal to 12000 GS.

[0019] Preferably, the pumping mechanism is a diaphragm pump.

[0020] Preferably, the moving mechanism includes:

[0021] A bracket;

[0022] Moving wheels, the number of which is four, and the four moving wheels are evenly arranged at the bottom end of the bracket.

[0023] Preferably, a pressure gauge is further included and disposed between the pumping mechanism and the filtering mechanism.

[0024] A battery paste filter assembly provided by the present utility model, by arranging a pumping mechanism, a filtering mechanism and an iron removing mechanism on a moving mechanism, enables the battery paste to be transported to the filtering mechanism through the pumping mechanism for filtering large particle impurities, and after filtering, the magnetic substances are removed through the iron removing mechanism, effectively optimizing the treatment of the battery paste. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic perspective view of a battery paste filter assembly provided by an embodiment of the present utility model;

[0027] Figure 2 It is a main cross-sectional view of an iron remover provided by an embodiment of the present utility model;

[0028] Figure 3 It is a main cross-sectional view of a filtering mechanism provided by an embodiment of the present utility model;

[0029] Figure 4 It is a schematic structural view of a battery paste filter assembly provided by an embodiment of the present utility model.

[0030] Reference numerals

[0031] 1 - Moving mechanism; 11 - Bracket; 12 - Moving wheels

[0032] 2 - Filtering mechanism; 21 - Filter housing; 22 - Filter element

[0033] 3 - Iron removal mechanism; 31 - Iron remover; 311 - Outer shell; 312 - Magnetic rod

[0034] 4 - Pumping mechanism

[0035] 5 - Feed inlet

[0036] 6 - Discharge outlet

[0037] 7 - Diverting switch; 71 - First three - way valve; 72 - First direct connection pipeline; 73 - Second three - way valve; 74 - Second direct connection pipeline

[0038] 8 - Pressure gauge Detailed implementation manners

[0039] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present utility model.

[0040] It should be noted that similar reference numerals represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0041] It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for differential description and cannot be understood as indicating or implying relative importance.

[0042] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0043] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] Please refer to Figures 1 to 4 , this embodiment provides a battery slurry filter assembly, which includes a moving mechanism 1, a filtering mechanism 2, a magnetic separation mechanism 3, and a pumping mechanism 4.

[0045] The filtering mechanism 2 is arranged on the moving mechanism 1, and its end is communicated with a feed port 5.

[0046] One end of the magnetic separation mechanism 3 is connected to the filtering mechanism 2, and the other end is communicated with a discharge port 6.

[0047] The pumping mechanism 4 is connected to the filtering mechanism 2.

[0048] Among them, the pumping mechanism 4 can be connected before the filtering mechanism 2 or after the filtering mechanism 2. The pumping mechanism 4 can transport the battery slurry entering from the feed port 5 to the filtering mechanism 2. The filtering mechanism 2 is used to filter large particle impurities in the battery slurry. After the filtering is completed, the battery slurry can continue to be transported to the magnetic separation mechanism 3, and the magnetic substances in the slurry are removed by the magnetic separation mechanism 3. Finally, the processed battery slurry is discharged from the discharge port 6 to complete the optimization treatment of the slurry. The battery slurry filter assembly provided by this embodiment is applicable to systems such as lithium iron phosphate, lithium cobaltate, lithium manganate, ternary, and lithium nickel cobalt manganate, as well as the positive and negative electrode processes of oil-based and water-based systems. The suitable slurry viscosity is: 6000 - 20000 Cps for oil-based solvents and 1000 - 6000 Cps for water-based solvents; the solvent characteristics are: oil-based solvent NMP (s.g = 1.033, b.p = 204 °C), water-based solvent H2O / NMP (s.g = 1.000, b.p = 100 °C); the suitable solid content is: 55% ± 20% for the positive electrode S.C., 65% ± 20% (PVDF# system) / 50% ± 10% (SBR system) for the negative electrode S.C.; the ambient temperature is: 15 - 30 °C.

[0049] A battery slurry filter assembly provided by this embodiment can effectively optimize the battery slurry by arranging a pumping mechanism, a filtering mechanism, and a magnetic separation mechanism on the moving mechanism, so that the battery slurry can be transported to the filtering mechanism by the pumping mechanism for filtering large particle impurities, and the magnetic substances are removed by the magnetic separation mechanism after filtering.

[0050] Further, the iron removal mechanism 3 includes a plurality of iron removers 31, and the ends of any two adjacent iron removers 31 are connected to form a "U" - shaped structure. The battery slurry flows in from one end of the "U" - shaped structure and flows out from the other end, increasing the residence time of the battery slurry in the iron remover 31 to enhance the adsorption effect on magnetic substances.

[0051] Further, please refer to Figure 2 , the iron remover 31 includes a housing 311 and a magnetic rod 312.

[0052] One end of the housing 311 is connected to the filtering mechanism 2, so that the battery slurry filtered by the filtering mechanism 2 can flow into the housing 311, and the other end is connected to the discharge port 5, facilitating the smooth discharge of the iron - removed battery slurry.

[0053] The magnetic rod 312 is arranged inside the housing 311 and extends along the length direction of the housing 311 to enhance the adsorption effect on magnetic substances in the battery slurry inside the housing 311.

[0054] Further, please refer to Figure 3 , the filtering mechanism 2 includes a filter housing 21 and a filter element 22.

[0055] The filter housing 21 is connected to the iron removal mechanism 3 or the discharge port 6.

[0056] The filter element 22 is arranged inside the filter housing 21 and is connected to the feed port 5.

[0057] Among them, the battery slurry in the feed port 5 flows into the filter element 22, the slurry flows into the filter housing 21 through the filter element 22, and large - particle impurities are intercepted by the filter element 22 to achieve the filtering effect. The filtered battery slurry flows into the iron removal mechanism 21 or the discharge port 6 after flowing through the filter housing 21. Among them, the filtering accuracy of the filter element 22 is between 30 and 300 microns, and the viscosity of the filtered material is 1000 - 20000 Cps.

[0058] Further, it further includes a flow - splitting switch 7. The flow - splitting switch 7 includes a first three - way valve 71 arranged between the filtering mechanism 2 and the iron removal mechanism 3, and the first three - way valve 71 is connected to the discharge port 6 through a first direct - connection pipeline 72.

[0059] Please refer to Figure 4 , when only filtering the battery slurry is required, the valve of the first three - way valve 71 can be controlled to make the battery slurry in the filtering mechanism 2 directly flow to the discharge port 6 through the first direct - connection pipeline 72.

[0060] Further, the flow - splitting switch 7 further includes a second three - way valve 73 arranged between the feed port 5 and the filtering mechanism 2, and the second three - way valve 73 is connected to the iron removal mechanism 3 through a second direct - connection pipeline 74.

[0061] Please continue to refer to Figure 4, when only the iron removal operation needs to be performed on the battery slurry, the valve of the second three-way valve 73 can be controlled so that the battery slurry flowing in from the feed port 5 directly flows into the iron removal mechanism 3 through the second direct connection pipeline 74.

[0062] Among them, the setting of the shunt switch 71 can perform filtration and iron removal operations on the battery slurry respectively by controlling the first three-way valve 71 and the second three-way valve 73 to meet different operation requirements.

[0063] Furthermore, the magnetic field intensity of the magnetic rod 312 is greater than or equal to 12000 GS to enhance the adsorption effect of the magnetic 312 on the magnetic substances in the battery slurry.

[0064] Furthermore, the pumping mechanism 4 is a diaphragm pump for transporting the battery slurry into the filtration mechanism 2.

[0065] Furthermore, the moving mechanism 1 includes a bracket 11 and moving wheels 12.

[0066] The number of the moving wheels 12 is four, and the four moving wheels 12 are evenly arranged at the bottom end of the bracket 11.

[0067] Specifically, the bracket 11 and the moving wheels 12 form a moving trolley, and the pumping mechanism 4, the filtration mechanism 2 and the iron removal mechanism 3 are arranged on the moving trolley to facilitate the movement of the device.

[0068] Furthermore, a pressure gauge 8 is also included and is arranged between the pumping mechanism 4 and the filtration mechanism 2. The model specification of the pressure gauge 8 is YTP60BF(0 - 1.0 MPa) to facilitate the display of the medium pressure.

[0069] Working principle: When the filtration and iron removal operations need to be performed on the battery slurry, the feed port 5 is extended into the slurry, and the pumping mechanism 4 can transport the battery slurry into the filtration mechanism 2. The filtration process is as follows: The slurry flows into the filter housing 21 through the filter element 22, and the large-particle impurities are blocked by the filter element 22. The slurry in the filter housing 21 then flows into the iron removal mechanism 3. The battery slurry flows in the outer shell 311 of multiple series-connected iron removers 31, and the magnetic substances in the slurry are adsorbed by the magnetic rod 312. The iron-removed slurry is discharged through the discharge port 6 to complete the optimization process. When only the filtration of the battery slurry needs to be performed, the valve of the first three-way valve 71 can be controlled so that the battery slurry in the filtration mechanism 2 directly flows to the discharge port 6 through the first direct connection pipeline 72. When only the iron removal operation needs to be performed on the battery slurry, the valve of the second three-way valve 73 can be controlled so that the battery slurry flowing in from the feed port 5 directly flows into the iron removal mechanism 3 through the second direct connection pipeline 74 and is discharged from the discharge port 6 after iron removal.

[0070] It should be noted that in this text, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0071] In this text, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. The above are only the preferred implementation manners of the present utility model. It should be noted that due to the limitation of literal expression and objectively infinite specific structures, for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements, refinements or changes can be made, and the above technical features can also be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the utility model to other occasions without improvement, shall all be regarded as the protection scope of the present utility model.

Claims

1. A battery paste filter assembly, characterized in that, Including: Moving mechanism (1); Filtering mechanism (2), arranged on the moving mechanism (1), and a feed inlet (5) is communicated with one end thereof; Iron removal mechanism (3), one end is communicated with the filtering mechanism (2), and the other end is communicated with a discharge outlet (6); Pumping mechanism (4), communicated with the filtering mechanism (2).

2. The battery paste filter assembly according to claim 1, characterized in that, The iron removal mechanism (3) includes a plurality of iron removers (31), and any two adjacent iron removers (31) are communicated at their ends to form a "U" - shaped structure.

3. The battery paste filter assembly according to claim 2, characterized in that, The iron remover (31) includes: A housing (311), one end is communicated with the filtering mechanism (2), and the other end is communicated with the discharge outlet (6); A magnetic rod (312), arranged in the housing (311) and extending along the length direction of the housing (311).

4. The battery paste filter assembly according to claim 1, characterized in that The filtering mechanism (2) includes: A filter housing (21), communicated with the iron removal mechanism (3) or the discharge outlet (6); A filter element (22), arranged in the filter housing (21) and communicated with the feed inlet (5).

5. The battery paste filter assembly according to claim 1, wherein It further includes a flow - dividing switch (7), and the flow - dividing switch (7) includes a first three - way valve (71) arranged between the filtering mechanism (2) and the iron removal mechanism (3), and the first three - way valve (71) is communicated with the discharge outlet (6) through a first direct connection pipeline (72).

6. The battery paste filter assembly according to claim 5, wherein, The flow - dividing switch (7) further includes a second three - way valve (73) arranged between the feed inlet (5) and the filtering mechanism (2), and the second three - way valve (73) is communicated with the iron removal mechanism (3) through a second direct connection pipeline (74).

7. The battery paste filter assembly according to claim 3, characterized in that, The magnetic field intensity of the magnetic rod (312) is greater than or equal to 12000 GS.

8. The battery paste filter assembly according to any one of claims 1 to 7, characterized in that The pumping mechanism (4) is a diaphragm pump.

9. The battery paste filter assembly according to any one of claims 1 to 7, characterized in that, The moving mechanism (1) includes: A bracket (11); Moving wheels (12), the number of which is four, and the four moving wheels (12) are evenly arranged at the bottom end of the bracket (11).

10. The battery paste filter assembly according to any one of claims 1 to 7, characterized in that, It further includes a pressure gauge (8) arranged between the pumping mechanism (4) and the filtering mechanism (2).

Images